I have upgraded to v2.3 and I got these settings to work.
The script that includes phpmailer doesn't change these parameters.
Yahoo delivers them to inbox
public $From = "me@domain.com";...

Hello.
I've tested sending emails to popular webmails like gmail and hotmail successfully.
The problem is with yahoo. All mails are delivered to SPAM folder.
These are some of my class.phpmailer...